The anterior belly of the digastric muscle begins from the digastric fossa of the lower border of the mandible, closer to the midline near the mandibular symphysis (symphysis menti). Along with digastric and geniohyoid muscles, the mylohyoid can depress the mandible against resistance, separating teeth that may be held together by food and facilitating chewing. From there it crosses anteroinferior towards the hyoid bone, piercing the stylohyoid muscle prior to attaching to the intermediate tendon of the digastric muscle. With its elevating actions on hyoid and floor of the mouth, the mylohyoid muscle aids deglutition by pressing the tongue against the hard palate, thus pushing the bolus towards the pharynx. It depresses mandible with the hyoid attachment fixed. 1: Submental lymph nodes 2: Submandibular lymph nodes 3: Supraclavicular lymph nodes 4: Retropharyngeal lymph nodes 5: Buccinator lymph node 6: Superficial The submental glands (or suprahyoid) are situated between the anterior bellies of the digastric muscle and the hyoid bone It is also at the base of the mandible, or lower jawbone.Like all the other suprahyoid muscles, it elevates both the hyoid bone and floor of mouth, when the mandibular attachment is fixed.Submental artery (a branch of the facial artery)Īttaching between the mandible and hyoid bone, the mylohyoid muscle has the following actions.Inferior alveolar artery (a branch of maxillary artery).The anterior belly inserts into the digastric fossa of the medial surface of the. Sublingual branch of the lingual artery The digastric muscle is named as such because it has two bellies.Mylohyoid innervation is supplied by the nerve to mylohyoid muscle.
Mandibular alveolar nerve, Nervus alveolaris mandibularisĪrterial supply to mylohyoid muscle comes from three sources The inferior surface of the muscle relates to the structures of the anterior neck triangle platysma, anterior belly of digastric muscle, submandibular gland, mylohyoid nerve and artery, and the facial and submental arteries and veins.
0 kommentar(er)
